Which port is the Domain Name System (DNS) primarily associated with for standard query and response actions in a network environment?
Port 443
Port 53
Port 21
Port 80
DNS uses port 53 for both TCP and UDP to serve its purpose of translating human-friendly domain names like 'example.com' into IP addresses that computers use to identify each other on the network. While DNS queries are generally sent using UDP to save on resources due to their small size and need for quick responses, TCP is used for larger queries like zone transfers or when reliability is of more concern over the slight delay that establishing a TCP connection brings. The other ports mentioned serve different protocols entirely (FTP and HTTP) and are not primarily associated with DNS activity.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
All IT & Cybersecurity Package plans include the following perks and exams .
Our pricing is simple. Full access to all certifications and exams in each package, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
Access to our AI assistant, Bash, trained to help you pass your exam.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
Access our store with even bigger discounts than before.
Unlimited access to all performance questions and be prepared for the real thing.
All IT & Cybersecurity Package plans include unlimited access to the following study materials.
Create an account or sign in to access our study materials.